Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2016	Mar. 28, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Beginning balance	$ (15.5)
OCI before reclassifications (net of tax)	152.1
Amounts reclassified from AOCI (net of tax)	0.1
Other comprehensive income (loss), net of tax	152.2	$ (26.3)
Ending balance	136.7
Foreign currency translation adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Beginning balance	(4.4)
OCI before reclassifications (net of tax)	150.9
Amounts reclassified from AOCI (net of tax)	0.0
Other comprehensive income (loss), net of tax	150.9
Ending balance	146.5
Fair value of derivative financial instruments, net of tax
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Beginning balance	(14.2)
OCI before reclassifications (net of tax)	(5.8)
Amounts reclassified from AOCI (net of tax)	0.1
Other comprehensive income (loss), net of tax	(5.7)
Ending balance	(19.9)
Fair value of investment securities, net of tax
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Beginning balance	6.3
OCI before reclassifications (net of tax)	6.2
Amounts reclassified from AOCI (net of tax)	0.0
Other comprehensive income (loss), net of tax	6.2
Ending balance	12.5
Post-retirement and pension liability adjustments, net of tax
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Beginning balance	(3.2)
OCI before reclassifications (net of tax)	0.8
Amounts reclassified from AOCI (net of tax)	0.0
Other comprehensive income (loss), net of tax	0.8
Ending balance	$ (2.4)